This is a “beta” version, so there may be more bugs than usual. There is one
fairly serious known issue with this version. Updating relationships via
association proxies is not working correctly. We cannot support
many-to-many relationships until this is resolved. If you have any insight
on how to fix this, please comment on GitHub issue #480.

About

Flask-Restless is a Flask extension that creates URL endpoints that satisfy
the requirements of the JSON API specification. It is compatible with models
that have been defined using either SQLAlchemy or Flask-SQLAlchemy.